Eye Cosmetics Flashcards
Why is the eyelid thin?
It must be thin enough for rapid movement yet strong enough to protect the tender eye tissues
What glands are present on the eyelids?
Highest conc of sebaceous glands found on the eyelids
What status does the eyes reflect?
Eyes are affected by immune system status
Name the basic Ingredients inside eyeshadow?
Binder: Talc & Magnesium stearate
Oil absorption: Kaolin
What ingredient is used in pastel eye shadows to improve coverage?
Titanium dioxide (TiO2)
What is used to give a pearly shine to eyeshadows?
Bismuth oxychloride (BiOCl) & fish scale essence
What about for a metallic finish?
Copper, aluminium, gold or silver
What are the ingredients in water-resistant eye shadow?
Higher content of oily binder
Contain pigments in petrolatum, cocoa butter, beeswax or lanolin
Name a problem of such water-resistant eye shadow
Short wearing time due to tendency to migrate into eyelid folds
Should use eyeshadow setting creams before eyeshadow as they provide an adherent base
Does the eyelid itself have any hair?
No
What are eyelashes made of?
A mixture of dead cells that have been keratinised (95%), binding melanin granules & small amts of water
Are eyelashes similar in composition to scalp hair?
Yes but they have slower growth & typically last for 3 mths before falling out
What is the role of eyelashes?
Protect eyes from debris & signal eyelid to reflexively close the eye when something is too close
Purpose of mascara?
To darken, thicken & lengthen eyelashes
Common pigments to produce the colour in mascara?
Black: Iron oxide
Navy: Ultramarine blue
Brown: Amber
What are water-based mascaras and what is the most pressing problem?
They are oil-in-water emulsions that contain beeswax in addition to pigments dissolved in water -> less prone to irritation but more prone to microbial contamination
Problem: Smudges with perspiration/tearing & needs preservatives.
What are solvent-based mascaras?
Waterproof mascaras with petroleum distillates to which pigments & waxes are added but requires surfectants to remove which can be more irritating to the eyes
Preservatives are still added but less microbial contamination since petroleum-based solvent is anti-bacterial.